Audio files do not play through the Alert Manager

[crokita]

Bug Report

Using the AlertManager to send an AlertView with an audio file in the payload will not be played when shown on the HMI.

Reproduction Steps

1. Make an AlertView
2. Add a sound SdlFile to the AlertView as an MP3 file type
3. Send it

Expected Behavior

The sound should play

Observed Behavior

The sound does not play

Browser & Version Information

All versions and environments are affected

Test Case, Sample Code, and / or Example App

const audioFileOnlyAlert = new SDL.manager.screen.utils.AlertView()
        .setAudio(new SDL.manager.screen.utils.AlertAudioData(null, null,
            new SDL.manager.file.filetypes.SdlFile()
                .setName('sound-file')
                .setFilePath(<file location>)
                .setType(SDL.rpc.enums.FileType.AUDIO_MP3)
        ));

[jordynmackool]

closed via #408